kernel/linux.git/include/uapi/linux/media.h, branch v4.5.4

[media] media-device: map new functions into old types for legacy API

2016-03-10T18:10:59+00:00

The legacy media controller userspace API exposes entity types that carry both type and function information. The new API replaces the type with a function. It preserves backward compatibility by defining legacy functions for the existing types and using them in drivers. This works fine, as long as newer entity functions won't be added. Unfortunately, some tools, like media-ctl with --print-dot argument rely on the now legacy MEDIA_ENT_T_V4L2_SUBDEV and MEDIA_ENT_T_DEVNODE numeric ranges to identify what entities will be shown. Also, if the entity doesn't match those ranges, it will ignore the major/minor information on devnodes, and won't be getting the devnode name via udev or sysfs. As we're now adding devices outside the old range, the legacy ioctl needs to map the new entity functions into a type at the old range, or otherwise we'll have a regression. Detected on all released media-ctl versions (e. g. versions <= 1.10). Fix this by deriving the type from the function to emulate the legacy API if the function isn't in the legacy functions range. Reported-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] media: Sanitise the reserved fields of the G_TOPOLOGY IOCTL arguments

2016-03-03T21:10:53+00:00

The argument structs are used in arrays for G_TOPOLOGY IOCTL. The arguments themselves do not need to be aligned to a power of two, but aligning them up to the largest basic type alignment (u64) on common ABIs is a good thing to do. The patch changes the size of the reserved fields to 5 or 6 u32's and aligns the size of the struct to 8 bytes so we do no longer depend on the compiler to perform the alignment. While at it, add __attribute__ ((packed)) to these structs as well. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

[media] media.h: postpone connectors entities

2016-03-03T17:52:51+00:00

The representation of external connections got some heated discussions recently. As we're too close to the merge window, let's not set those entities into a stone. Signed-off-by: Mauro Carvalho Chehab

[media] media.h: use hex values for range offsets, move connectors base up.

2016-03-03T08:56:33+00:00

Make the base offset hexadecimal to simplify debugging since the base addresses are hex too. The offsets for connectors is also changed to start after the 'reserved' range 0x10000-0x2ffff. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] media.h: get rid of MEDIA_ENT_F_CONN_TEST

2016-02-16T11:15:23+00:00

Defining it as a connector was a bad idea. Remove it while it is not too late. Signed-off-by: Mauro Carvalho Chehab

[media] [for,v4.5] media.h: increase the spacing between function ranges

2016-02-16T11:07:16+00:00

Each function range is quite narrow and especially for connectors this will pose a problem. Increase the function ranges while we still can and move the connector range to the end so that range is practically limitless. [mchehab@osg.samsung.com: Rebased to apply at Linus tree] Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] Postpone the addition of MEDIA_IOC_G_TOPOLOGY

2016-01-11T14:35:17+00:00

There are a few discussions left with regards to this ioctl: 1) the name of the new structs will contain _v2_ on it? 2) what's the best alternative to avoid compat32 issues? Due to that, let's postpone the addition of this new ioctl to the next Kernel version, to give people more time to discuss it. Signed-off-by: Mauro Carvalho Chehab

[media] uapi/media.h: Use u32 for the number of graph objects

2016-01-11T14:19:24+00:00

While we need to keep a u64 alignment to avoid compat32 issues, having the number of entities/pads/links/interfaces represented by an u64 is incoherent with the ID number, with is an u32. In order to make it coherent, change those quantities to u32. Signed-off-by: Mauro Carvalho Chehab

[media] media.h: let be clear that tuners need to use connectors

2016-01-11T14:19:10+00:00

The V4L2 core won't be adding connectors to the tuners and other entities that need them. Let it be clear. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] media-device: Use u64 ints for pointers

2016-01-11T14:19:07+00:00

By using u64 integers and pointers, we can get rid of compat32 logic. So, let's do it! Suggested-by: Arnd Bergmann Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab